(57) A frequency-division multiplexing transmission apparatus for transmitting data in
a frequency spectrum specific to both symbol and mobi le station, is disclosed. The
apparatus encodes transmission data, modulates the encoded data, compresses the time
domains of each symbol of the modulated transmission-symbol sequence, repeats the
symbols a specified number of times, rearranges each of the symbols of the obtained
repetitive-symbol sequence so that they have the same arrangement as the transmission-symbol
sequence, generates each phase that changes at a speed specific to each symbol of
the transmission-symbol sequence, performs phase rotation specific to the symbols
for each symbol of the rearranged repetitive-symbol sequence, generates phase that
changes at a speed specific to a mobile station, performs phase rotation specific
to the mobile station for the symbol sequence for which the phase rotation was performed,
and transmits the phase-rotated symbol sequence.
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